碳纳米管水泥基复合材料导电特性影响因素研究进展

Research Progress on Influencing Factors on Electrical Conductive Properties of Carbon Nanotubes-Reinforced Cement Based Composite Materials

将适量碳纳米管加入水泥基材料,可使其拥有独特的导电特性,进而实现水泥基材料结构的自感知和智能化。碳纳米管水泥基复合材料的导电特性受到物理场和材料组分等因素的影响和制约,但现有研究对此问题的关注和深度不够。综述了碳纳米管水泥基复合材料导电特性影响因素的研究现状,针对复合材料的电阻率和电流等电学指标,分析了物理场影响复合材料导电特性的机制,讨论了材料组分对碳纳米管水泥基复合材料导电机理的影响,提出了有待进一步研究的问题,展望了碳纳米管水泥基复合材料导电特性的未来研究发展趋势。

An appropriate amount of carbon nanotubes can be added into cement-based materials to obtain the unique conductive properties(i.e.,self-sensing and intelligence of cement-based material).The electrical conductivity of carbon nanotube cement-based composites is affected and restricted by some factors such as physical field and material composition.Some recent works on influencing factors on electrical conductive properties of carbon nanotubes-reinforced cement based composite materials were reviewed.For the electrical indicators such as resistivity and current of composites,the mechanism of the physical field influencing the conductive properties of composites was analyzed.The effect of material component on the conductive mechanism of carbon nanotube cement-based composites was discussed.The problems to be further investigated were proposed,and the future research and trends of the conductive properties of carbon nanotube cement-based composite materials were prospected.